Unwanted deformation by changing the pose of armature
Okay, so we have no idea what you did to this to get it this whacked out, but first of all, I went to the object menu, and cleared the armature from the table's parent.

Notice that the table flies across the entire world after doing this.

IN OBJECT MODE with no weight paints, or anything else going on, get the table and the armature in generally the same spot as each other using G (translate).

Next, select the table, and then the armature. Hit Ctrl+P > with automatic weights. This fixes most of the problems.

You may need to do some veeery minor weight painting, but don't go overboard 'cause it's real easy to mess up with the weight paint.